DoBeDoBeDo:As long as the hub is secure, the rest of the system is as well.

Oh so it's THEORETICAL security.

Well it's not like this setup is ever going to see the light of day, I mean they're running hub and spoke for God's sake. But the fact that they can actually make a hub that is capable of passing quantum information without compromising the security is huge, and it'll be even bigger once they figure out how to make a router that can do the same thing.

Basically, Quantum Cryptography is a *secure* method of transmitting one-time-pads, and actually has a method to determine if anyone is attempting to intercept the transimission (since their attempted interception will likely alter some of the attempted transmissions, so if you randomly check X% (don't remember the number off the top of my head), you have a near 100% chance of determining whether or not there was an eavesdropped while you were transmitting the one time pad.) Once the one time pad is transmitted, you can then securly send ANYTHING, since a one time pad, if created and used correctly, litterally cannot be broken.

I'd do it myself, but I'm already working on four novels at the same time and my plate is full. So here's an SF story idea for someone to run with:

Breakthroughs in quantum computing technology quickly lead to its adoption as the new standard for the worldwide net for hub-to-hub data transmission. Due to understandable caution and technical reasons, this is not done piecemeal between the different hubs. Instead, a new, parallel hub network is created and everything is switched at once.

There are problems. The entire net crashes, and everything is switched back to the original system. It is quickly discovered that there were two causes for the crash: 1) the Internet suddenly "expanded" by a factor of 10 to the 6th power, and there were suddenly a great number of duplicated ISP addresses appearing.

It is discovered that the quantum network apparently accessed not only our own Internet, but also: 1) the Internets of the a huge number of parallel universes that had also hooked up their experimental quantum networks at the same time, and 2) the already-existing 10,000 or so alien networks across our own timeline in various galaxies that had already switched to quantum computing.

(Note: quantum computing is not limited by the speed of light, since the location of an elementary particle can be literally anywhere from one moment to the next, with a decreasing probability based on distance fro the original node.)

Just Another OC Homeless Guy:(Note: quantum computing is not limited by the speed of light, since the location of an elementary particle can be literally anywhere from one moment to the next, with a decreasing probability based on distance fro the original node.)

Quantum cryptography is a misnomer. It's really just quantum tamper detection. All it does is make sure that you know whether someone is listening in on your line. Then you use the secure line to transmit a secret key.

jfarkinB:Just Another OC Homeless Guy: (Note: quantum computing is not limited by the speed of light, since the location of an elementary particle can be literally anywhere from one moment to the next, with a decreasing probability based on distance fro the original node.)